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Update Guidance
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This section provides basic guidance on updating your AuthControl Sentry® appliance using our YUM update service. If you require additional assistance please contact your Swivel Secure Partner, or if you have a maintenance agreement in place, contact the Swivel Secure Support team.

* Only direct upgrades from AuthControl Sentry® V4.x are supported. If you have a previous version of AuthControl Sentry®, please contact your Swivel Secure Partner or Swivel Secure Support team.
* Upgrades require a V4.x license
* Internet Access is required
* Working external DNS is required

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Specification Requirements
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Before commencing the update, please ensure your Swivel Secure appliance or appliances meet the required specification below.

The required specifications for AuthControl Sentry® V4 virtual appliances.

• 4GB RAM (minimum), 4GB RAM Recommended
• 2 cores Minimum, 4 cores recommended
• 80GB HDD (Thick Provisioned)
• VMware ESX/ESXi 4 or above
• 1 vNIC (minimum)
• Hardware only – please ensure your hardware appliance has sufficient memory to perform the upgrade before starting

For high load virtual environments more resources (Memory & CPU) can be added. Please contact supportdesk@swivelsecure.com for more information as additional settings may be required.

For virtual appliances - ensure you take a snapshot before you start

For hardware appliances - ensure you take a full backup through the CMI before you start

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Performing the Update
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To perform the update, please connect to the Console/CMI and navigate to Menu > Administration > Update
Appliance.

.. image:: images/ReleaseNote/4.2.1/1.png

The order in which you perform a system update is important. Please follow the order below:

1. CMI - Please ensure you logout and then back in again after CMI Update.
2. System (Linux OS, services, drivers, etc). There may be a requirement to perform multiple system updates depending on your current version. Please re-run the system update until no further updates are required. After each system update, a reboot should be performed.
3. AuthControl Sentry®

.. image:: images/ReleaseNote/4.2.1/2.png

If you have an high availability (HA) environment, update the standby appliance first.
Once successful, update the primary appliance